Really appreciate the feedback guys. It threw me off that a few of the same colleges coaches were saying they'd be at both, when they are 2.5 hours apart.
Fenway, I like your idea of calling the coaches and asking their suggestion for best fit.
Son was able to meet and put on a good showing for Brown, Harvard, and Dartmouth coaches, and he hopes the Stanford coaches, at the recent Stanford All Star Camp. Plan is get him in front of them again soon. We opted for November HF (possibly) because of the emphasis on rising seniors at the August HF camps.